Sanitary pipe fitting



July 15 1924.

A; E. M DONALD SANITARY PIPE FITTING Fil ed D50; 2.9. 1925 Patented July15, 1924.

ALEXANDER'E. MAGDONALD, F WORCESTER, MASSACHUSETTS.

SANITARY PIPE FITTING.

Application filed December 29, 1923. Serial No. 683,346.

; To all whom it may concern:

Be it known that I, ALEXANDER E. MAG- DONALD, a citizen of the UnitedStates, re-

siding at Worcester, in the county of'Wor ccster and State ofMassachusetts, have in-' vented a new and useful Sanitary Pipe Fitting,of which the following is a specification.

This invention relates to a pipe fitting for use at each fioor of abuilding for connecting closets and other fittings with the soil pipeand properly venting the-same.

The principal object of the invention is to provide a comparativelysimple cast fitting for this purpose, which when connected up, willeleminate a large number of fittings,

some of them special, and several feet of piping at each floor, thuseconomizing in thev materials used and especially in the labor.

The invention involves a fitting constituting a combination T and Y andhaving special means to vent the side passage wh ch forms part of the Y,the Y being horizontal at the top.

Reference is to be hadto the accompanying drawings, in which Fig. 1 is aviewof the soil pipe and connections for three'floors of a building witha preferred embodiment ofmy invention ap-' pliedthereto on the first andsecond'floors;

Fig. 2 is a side view of the fitting on en'- larged scale;

Fig. 3 is a plan of the same; and i r Fig. 4 is an end view.

, I have shown the invention as applied to i a soil pip e'10,1a1thoughit can be applied to a stand pipe, drainage stack or the like. This soilpipe is shown as extending down through three floors of a building ateach of which it isadapted to 'be' connectedwith a closet, bath tub,sink and the like. I have shown the building ,as supplied with two andhaving hubs and openings at opposite ends for. receiving, sections ofthe soil pipe 10 me well known manner. In the same vertical plane as thecenter oftheupright partl-l is the'cente'r of a hub 12 which is designedto, be connected with the outlet 13 from a closet. It will be seen thatthis part of the fitting constitutes a T, an interior passage from thehub 12 opening down into the upright passage in the part 11 rightsection 11. 'This' part of the device is vented by a vent passage 14 ina hub 15 ter'- minating'i'n the plane of the end hub 16 whichconstitutes the top of theu pright pop tion 11 and which receives-thelower end of the soil pipe 10 above. These parts are all substantiallysymmetrical with respect to the vertical plane whichpasses through thecenters of the upright ll and the hub 12.

Now to describe the Y part of the device, the throat 17, which leadsfrom the upright part 11 to the hub 12' and which is curved The hub 12is located between the ends of the up} in order to allow the water toflow down into the soil pipe, is provided with a side extension 20having a passage therethrough'.

This passage communicates with the interior of the fitting and extends:on a slight curve into themain channel thereof. It terminates in a hub21 which has its terminalplane in the same vertical plane as the end ofthe hub 12. This hub 21 is provided for the purpose of connecting with adrain pipe 22 from the bath tub, sink, washing machine, or other fixtureor fixtures which may be located in the same room or adjacent thereto.The difliculty comes in venting this part of the device so that when twoclosets are flushed on different floors a siphon will not be formed toempty one of the traps. This venting has been done heretofore by a searate pipe which had to be connected'wlth the other vent pipe andinvolved a great deal of unnecessary expense as I' have found;

For the purpose of venting this angular part 20 of the Y, I cast itwhen'it ismade with a, hollow projection 23 extendin'g'practically fromthe outer side thereof clear over tothe vent passage 14 and into whichit extends. This hollow projection '23 thus permits. air to enter itfrom all parts of the side passage 20 of the Y and delivers the air intothe vent passage 14. I

The vent pipe 25 extends-up vertically from the vent passage 14 and issecured in the usual Way in the hub 15. This passes up to a-fitting.26on the second floor above the second fitting A.. The vent pipe27 on thisfloor, [which corresponds with the vent pipe 25. below, enters thisfitting 26 makes the venting a very simple matter."

- I n the caseof the top floor the fitting B does not necessarily havethis additional venting feature because it cannot interfere with anydischarge from any floor above. The ventpipe extends clear up above thetop floor and enters into the soil pipe through a fitting 28 as isusual.

As heretofore constructed there is the main vent pipe which has afitting below the bottom floor connected to the soil pipe. The mainfitting is provided with a vent pipe which extends upwardly a shortdistance and is then connected by a fitting to the main vent. p pshaving only a single vent pipe on the first floor and also avoid theextra fitting by, which the old vent pipe was connected with. the soil,pipe including. a T or Y below the fitting A. On thesecond floor allthese fit tings above mentioned are'also avoided as well as a cross forconnecting what corresponds with the vent pipe 27 with the vent pipe 25,and with the other vent pipe from the fitting immediately below thefitting A on; that fioor. In addition to this there are severalelbowsand other fittings that are liminated- In fact altogether I countthat I provide eight or nine fewer fittings on the second floor than]have been necessary heretofore and do. away with several feet of ventpipe. The same saving is made on.

all floors between the first and top floors. I

s also simplify the soil piping by not having vent pipe enter it at alldirectly.

TIn, this way theflnecessary venting is secured all the along the lineand there is nonecessity for putting any fittings, except the onesherein illustrated, into the soil pipe anywherefrom the bottom to thetop ofithe building; This is all done by one casting at eachfioor andthe vent. pipe itselfand its fittings are reduced in cost by a verylarge percentage without any danger of clogging the pipe. Yet thebreaking of all the vacuums is prevented.

' The arts above described can constitute the entire fitting if desiredbut in some cases I prefer tones the pipe 22 and side extension 20 forone purpose only, as for example the bath tub. In that case the pipe 30from thesink and 31 from thewash tray drain into the branches of adouble Y 32. This discharges directly down into a hub 33 integral withthe cast fitting A. Below the hub 33 is a vertical branch 34communicating with the main upright part 11 to discharge therethroughfIn this case these parts are vented directly by a vertical vent pipe 35connected with the vent pipe 27 above. I I g Although I have illustratedand described only a single form of the invention I am aware of the factthat modifications can be madatherein by any person skilled in theartw1thout departlng from the scope of the invention as expressed in theclaims. There-- This fitting I avoid, 1

having an air passage adapted to be connected with a vent pipe, and theside pas sagehaving' an upwardly extending hollow projection to vent theside passage and communicating with the vent passage withinthe body ofthe fitting, whereby the entire fitting can be vented by a single ventpipe.

2. As an article of manufacture a T-Y fitting for a soil pipe or thelike comprising a main vertical hollow body having. a branchextendingtherefrom at right angles for communication with the outlet of a watercloset and provided with a side inlet passage communicating with theinterior of the fitting at the same level for connection with a bathtub, wash basin or the like, the fitting having communicating'with. themain portion thereof an air passage adapted to be connected, with a ventpipe extending directly up from it, and the side passage having an'upwardly extending hollow projection extending across it in order tovent the side passage all the Way across and communicating with the Ventpassage within the body of the fitting.

3. As an article of manufacture, a 'T Y fitting for a soil pipe or thelike comprising a main vertical hollow body having a branch extendingtherefrom and provided with a side passage communicating with theinterior of the fitting and an air passage adapted to be connected witha ventpipe extending up from it, and the side passage having an upwardlyextending hollow projection to vent the side passage and communicatingwith the vent passage Within the bod'y'of the fitting and located partway betweenthe vertical portion of the fitting and the points at whichthe same is adapted tobe connected with the waste pipe from the closetbowl and the like.

4 As an article of manufacture a T-Y fitting for a soil pipe or the likecomprising a main vertical hollow body having a branch extendingtherefrom at right angles for communication with the outlet of a watercloset and provided with aside inlet passage communicating with theinterior of the fitting for connection with a bath tub, wash basin'orthe like, the fitting having, communicating ,with the main portionthereof, an air passage adapted to be conup from it, and the sidepassage having an upwardly extending hollow projection extending acrossit in order to vent the side passage all the way across andcommunicating with the vent passage within the body of the fitting, theside passage being inclined downwardly toward the interior of thefitting, and the hollow projection being located horizontally above itand communicating with it substantially all the way across it.

5. In a soil pipe system, the combination with a vertical soil pipe, ofa T-Y fitting at each floor, said fittings below the top floor eachbeing provided with a hub for connection with a water closet, and a hubfor connection with a sink, bath-tub or the like substantially at thesame level, each fitting having a vertical air vent passage between thefirst named hub and the main water passage down through it, for thepurpose of venting that portion of the'i fitting, and a recess withinthe fitting communicating with said passage and arranged to conduct theair into said passage from all points across the portion of the fittingwhich communicates between the second hub and the main vertical passagein the fitting, a

single vent pipe extending upwardly from the vent passage for ventingboth parts of the fitting, and a main vent pipe extending upwardly alongthe soil pipe and connected at one point only with the first named hub.

6. As an article of manufacture, a fitting for a soil pipe or the likecomprising a main hollow body having a branch extending fitting having avertical side passage communicating with the main hollow body to receivethe outlets from a sink and wash tray and vented by a vertical vent pipeextending directly up from it.

In testimony whereof I have hereunto aflixed my signature.

ALEXANDER E. MACDONALD.

